test_audioBufferSourceNodeDetached.html (1398B)
1 <!DOCTYPE HTML> 2 <html> 3 <head> 4 <title>Test AudioBufferSourceNode when an AudioBuffer's getChanneData buffer is detached</title> 5 <script src="/tests/SimpleTest/SimpleTest.js"></script> 6 <script type="text/javascript" src="webaudio.js"></script> 7 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> 8 </head> 9 <body> 10 <pre id="test"> 11 <script class="testbody" type="text/javascript"> 12 13 function createGarbage() { 14 var s = []; 15 for (var i = 0; i < 10000000; ++i) { 16 s.push(i); 17 } 18 var sum = 0; 19 for (var i = 0; i < s.length; ++i) { 20 sum += s[i]; 21 } 22 return sum; 23 } 24 25 var worker = new Worker("audioBufferSourceNodeDetached_worker.js"); 26 27 var gTest = { 28 length: 2048, 29 numberOfChannels: 1, 30 createGraph(context) { 31 var buffer = context.createBuffer(1, 10000000, context.sampleRate); 32 var data = buffer.getChannelData(0); 33 for (var i = 0; i < data.length; ++i) { 34 data[i] = (i%100)/100 - 0.5; 35 } 36 37 // Detach the buffer now 38 var data = buffer.getChannelData(0).buffer; 39 worker.postMessage(data, [data]); 40 // Create garbage and GC to replace the buffer data with garbage 41 SpecialPowers.gc(); 42 createGarbage(); 43 SpecialPowers.gc(); 44 45 var source = context.createBufferSource(); 46 source.buffer = buffer; 47 source.start(); 48 // This should play silence 49 return source; 50 }, 51 }; 52 53 runTest(); 54 55 </script> 56 </pre> 57 </body> 58 </html>